| 基于模块化隔离型DC/DC变换器的海上直流风电场并网方案 |
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| 引用本文： | 尹瑞,江道灼,唐伟佳,周洋,梁一桥,杜翼.基于模块化隔离型DC/DC变换器的海上直流风电场并网方案[J].电力系统自动化,2016,40(17):190-196. |
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| 作者姓名： | 尹瑞 江道灼 唐伟佳 周洋 梁一桥 杜翼 |
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| 作者单位： | 浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027,浙江大学电气工程学院, 浙江省杭州市 310027,国网福建省电力有限公司经济技术研究院, 福建省福州市 350012 |
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| 摘 要： | 与传统的海上风电场采用中压交流系统汇集电能不同,海上直流风电场采用直流系统实现电能的汇集和远距离传输。为减小海上风电场的投资,提高其运行效率,设计了一种基于模块化隔离型DC/DC变换器(MIDC)的新型海上直流风电场并网方案。首先,对三种可能作为MIDC子模块的DC/DC变换器进行了参数设计和对比分析,最终确定了LLC串并联谐振变换器作为MIDC子模块的拓扑。在此基础上,设计了MIDC的控制系统,在实现MIDC子模块间均压和均流的同时,实现了对风力发电机组输出功率的最大功率跟踪。最后,通过仿真验证了所设计的海上直流风电场并网方案的可行性和所设计的MIDC控制系统的有效性。
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| 关 键 词： | 海上直流风电场 直流/直流变换器 高压直流输电 控制系统 |
| 收稿时间： | 2015/9/16 0:00:00 |
| 修稿时间： | 7/2/2016 12:00:00 AM |
Modular Isolated DC/DC Converter Based Grid-connection Scheme for Offshore DC Wind Farm |
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| YIN Rui,JIANG Daozhuo,TANG Weiji,ZHOU Yang,LIANG Yiqiao and DU Yi.Modular Isolated DC/DC Converter Based Grid-connection Scheme for Offshore DC Wind Farm[J].Automation of Electric Power Systems,2016,40(17):190-196. |
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| Authors: | YIN Rui JIANG Daozhuo TANG Weiji ZHOU Yang LIANG Yiqiao and DU Yi |
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| Affiliation: | College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China,College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China and Power Economic Research Institute of State Grid Fujian Electric Power Company, Fuzhou 350012, China |
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| Abstract: | Different from conventional offshore wind farm with alternating current(AC)collection system, the offshore wind farm with pure direct current(DC)system has DC collection and transmission system. To cut investment costs and increase efficiency, a novel modular isolated DC/DC converter(MIDC)based offshore wind farm is designed. Three candidate DC/DC converter topologies are designed and compared, and the LLC resonant converter is chosen as the sub-module of the MIDC. A control system is designed to realize voltage and current sharing of the MIDC sub-modules while realizing maximum power point tracking(MPPT)control of the permanent magnetic synchronous generators(PMSGs). Finally, the feasibility of the designed system is validated by a simulation model based on PSCAD/EMTDC. |
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| Keywords: | offshore DC wind farm DC/DC converter high voltage direct current transmission control system |
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